Knott Rigg is a Lake District fell of 556 m in Cumberland. All four of its nearest neighbours are higher, up to Crag Hill at 839.2 m.
It sits below Wandope, only 1.3 km to the north-west and 217.9 m higher. Its key col leads to Grasmoor, not to its nearest higher summit, Wandope. All four of its nearest neighbours lie to the north, so it stands at the southern edge of its group. The highest point is recorded as ground 1m w of small pile of stones, not a cairn. It falls on two OS 1:50,000 sheets, 89 and 90.
